#2 May 29, 2006 18:02
Was the upgrade [url=http://b2evolution.net/news/2006/05/12/the_new_central_antispam_blacklist]this one[/url] by any chance? AFAIK that's the only official upgrade, unless you mean you installed a hack and upgraded to 0.9.2, but if that's the case your upgrade would have (probably) wiped out the hack.
I thought for sure someone else pointed out a solution relative to "antispam_url" function but I sure can't find it now. That problem did not refer to an issue with uploading images though. FWIW I've searched b2evocore/_functions.php for "antispam_url" in both 0.9.1b and 0.9.2 and came up with no match.
What version are you running? How much modification have you done with your installation?